I have tried an Ant+ speed sensor in Locus Map in different configurations (compared with a GPS speed stabilized measure), and founded some limitations/errors in its results:
- a poor precision at low speed (under 10-15 km/h)
- false indication when reaching high speeds (over 75-80 km/h), with the indicated speed not growing more.
Any idea of the reasons of that ?
Anyway, the measures seems relatively correct between 15 and 70 km/h :)
https://www.youtube.com/watch?v=5F3GFEbdVwo (https://www.youtube.com/watch?v=5F3GFEbdVwo)
At low speed in the first half of this under second video:
https://www.youtube.com/watch?v=CmhgXX_T4pA (https://www.youtube.com/watch?v=CmhgXX_T4pA)
The sensor I test is this one (https://fr.aliexpress.com/item/Capteur-de-vitesse-de-v-lo-sans-fil-BT-ANT-v-lo-IPX7-4g-Mini-v/32956093609.html?spm=a2g0w.search0104.3.292.68d3629cxqnqpY&transAbTest=ae803_5&ws_ab_test=searchweb0_0%2Csearchweb201602_2_10065_10068_10890_319_10546_317_10548_10696_10084_453_454_10083_10618_10304_10307_10820_537_536_10843_10059_10884_10887_321_322_10103%2Csearchweb201603_16%2CppcSwitch_0&algo_pvid=d65b159d-0cc3-4b47-9369-e76a3ac467aa&algo_expid=d65b159d-0cc3-4b47-9369-e76a3ac467aa-36):
(http://img110.xooimage.com/files/3/c/c/my-ant-speed-sensor-561017d.png)
Note: not able to mount it on the hub of the wheel as figured above (it is with my EUC or my car), I mount it on the side of the rim... May be a problem ?
(https://www.espritroue.fr/uploads/monthly_2019_03/1762443849_20190324_capteurAnt.jpg.ef44300f014160d85bdd16f7ab13331e.jpg)